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Physics Paper 1
Electricity Fundamentals
Label current and voltage in circuit questions.
Key Facts
- Current is the same in a series circuit.
- Potential difference adds in series circuits.
Key Equations
current = charge / time
voltage = energy / charge
Topics Covered
Current and Potential Difference
What you need to know
- •Current is the flow of charge.
- •Potential difference is the energy transferred per charge.
Exam Tips
- Quote units: current in amps, voltage in volts, charge in coulombs.
Key Terms
Current
Rate of flow of electric charge.
Potential difference
Energy transferred per coulomb of charge.
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Common Exam Questions
Explain what happens to current in a series circuit.
2 markseasyPhysics Paper 1
Model Answer
Current is the same at all points in a series circuit because charge has only one path.
What examiners want to see
- ✓State current is the same.
- ✓Link to single path for charge.
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